中国电机工程学报2024，Vol.44Issue(8)：3165-3176,中插19,13.DOI:10.13334/j.0258-8013.pcsee.223349
FLNG船舶能量管理系统设计与性能优化
Design and Performance Optimization of Energy Management System for FLNG Ships
摘要
Abstract
Floating liquefied natural gas production,storage and unloading unit special liquid cargo vessel(FLNG),as a new device for the development of offshore natural gas fields,greatly facilitates the development and utilization of deep-sea gas fields.This paper proposes a new type of cryogenic energy management system for special liquid cargo ships using the FLNG"Prelude"as the depot ship.The system mainly uses liquid air as a medium to store and release energy.Through the combination of liquid air-cooling energy and mixed refrigeration cycle,the process of natural gas liquefaction is realized.While improving the production performance of LNG,the CO2 liquefaction cycle and power production are integrated,and the output performance of the system is improved through CO2 liquefaction and surplus cold energy generation.The multi-stage utilization of FLNG ship cold energy is realized,and a new method and a new way are provided for FLNG ship cold energy utilization.The proposed system has better performance than the benchmark model and can achieve cost recovery in 7.04 years.Finally,multi-objective performance optimization is adopted to further increase the exergic efficiency of system exergy to 60.67%and reduce the cost by about 2.3%.The special liquid cargo ship low temperature energy management system features high efficiency,low consumption,stable returns and low carbonization,which can better optimize the offshore LNG supply chain and promote the"carbon peak and carbon neutrality"development of the shipping industry.关键词
浮式液化天然气生产储卸装置船舶/低温能量管理/液态空气储能/系统设计/多目标优化Key words
floating liquefied natural gas system(FLNG)ship/low temperature energy management/liquid air storage/system design/multi-objective optimization分类
能源科技引用本文复制引用
夏睿,王哲,董博,韩凤翚,纪玉龙,蔡文剑..FLNG船舶能量管理系统设计与性能优化[J].中国电机工程学报,2024,44(8):3165-3176,中插19,13.基金项目
国家重点研发计划项目(2023YFB4301705) （2023YFB4301705）
中央高校基本科研业务费专项资金资助(3132023527). National Key R&D Program of China(2023YFB4301705) （3132023527）
the Fundamental Research Funds for the Central Universities(3132023527). （3132023527）
